Evaluate one cell against an array

[tatoon]

I have two sets of information, on one hand I have telephone numbers and in the other set I have prefixes and countries. My goal is to tell to which country each number belongs:

i.e.


Numbers Prefix Country
4476324125 44 UK
3354326544 33 France
9713425432 971 UAE
9143253245 91 India
1343543253 1 USA
4432412412
4924241214
7431242424



So I would need to add a column next to "Numbers" saying to which country each number belongs.

My list has a few thousand numbers and a couple of hundred prefixes.
I tried with some array formula, but cannot make it work. Any idea on how this can be done? It would be interesting not to use VB.

Thanx!